kippercreek summer ale Brew Session

Brewed 7/19 151 mash temp (had to add 16oz cold water to bring temp in line) 5.01 sparge pH 5.44/1.076 first runnings 5.91/1.032 second runnings 5.91/1.007 final runnings 5.51/1.038 pre-boil 1.044 O.G., 5.08 post-boil pH. First brew in a couple months. Outside of some pH issues, pretty easy. Not sure why I continue to encounter these wonky pH values during run-off. After I checked my second runnings, I added bits of phos directly on top of the mash before adding any more sparge water. Added probably 10mL during the last half of coppering up. I rechecked the pH of the HLT and found that it was around 6.4. This is while mixing the HLT during sparge, etc. Added 10mL phos to BK after checking the pre-boil, and added 5mL phos at EOB. Dead nutz on gravity, and put in the ferm chamber to bring temp in line before pitching yeast. Couldn't KO any cooler than 78F.